Valve mechanism for explosive-engines.



K; E; K LER; 1 VALVE MECHANISM FOR EXPLOSIVE ENGINES.

APPLICATION FILED AUG-23. I913- Patented Jan. 28, 1919.

3 SHEETS-:SHEET I.

- amen 30m PM 6617M v K. E. KELLER. VALVE MECHANISM FOR EXPLOSIVE ENGINES.

APPLICATION FILED AUG.23, I913.

Patented Jan. 28, 1919.

3 SHEETS-SHEET 2.

K. E. KELLER. VALVE MECHANISM FOR EXPLOSIVE ENGINES.

APPLICATION FILED AUG.23. I913.

11,292,477, Patented Jan. 28,1919.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

KENT E. KELLER, 0F AVA, ILLINOIS.

VALVE MECHANISM FOR EXPLOSIVE-ENGINES.

Specification of Letters Patent.

Application filed August 23, 1913. Serial N 0. 786,228.

To all whom it may concern:

Be it known that I, KENT E. KELLnR, 'of

Ava, in the county of Jackson, and in the State of Illinois, have invented a certain new and useful Improvement in Valve Mechanism for Explosive-Engines, and do hereby declare that the following is a full, clear, and exact description thereof. The object of my invention has been to provide an improvement in valve mechanism for explosive engines which shall have, among others, the following advantages:

That it shall be simple and cheap in construction and shall have few moving parts; that it shall provide large inlet and exhaust openings; that it shall have a minimum of clearance and exhaust openings; that it shallhave eflicient lubrication and cooling; that it shall be capable of ready and efficient adj ustment for wear, and that it shall be read ily taken apart.

And to such ends my invention consists in the improvement in valve mechanism for explosive engines hereinafter specified.

In the accompanying drawings Figure l is a side elevation, partly in section, of an engine embodying my invention, the section being taken on the line A-A, of Fig. 3;

Fig. 2 is a rear end view of Fig. 1;

Fig. 3 is a top plan view of same, showing in part a section on the line CC of Fig. 2;

Fig. 4 is a vertical sectional view on the line DD of Fig. 1;

Fig. 5 is a horizontal sectionalview of the exhaust valve and adjacent parts of the frame;

Figs. 6 and 7 are,respectively, sections of Fig. 5 on the lines E-E and F-F.

The embodiment of my invention shown in the accompanying drawings is the best embodiment thereof known to me, but such embodiment is to be taken as typical only of many possible embodiments, and my invention is not to be limited thereto.

In the illustrated embodiment I have shown an explosive engine having a series of cylinders '1 (in the present instance there being four such cylinders), the cylinders having pistons whose'connecting rods (not shown) engage cranks on the driving shaft 2. Each cylinder (as shown in Fig. 4) has an exhaustport 3 and an intake port 4. Above the line of exhaust ports is formed a conical bore 5, in which is mounted the ho1 .the cross-sectional area of the valve increases. At its forward end the valve rests against a thrust bearing, having a screw plug 9 which bears against a journal 10 formed on the valve, so that the position of the plug determines the position of the valve. A lock-nut 11 is preferably provided to secure the plug in any desired position of adjustment. Near its rear end the valve is provided with a collar 12, which stands within an annular boss or sleeve 13, on the frame, into which is screwed a ring 14, a spring washer 15 being interposed between the ring 14 and the collar 12. By adjusting the annular nut 14, the proper degree of pressure can be brought to bear upon the spring .washer to force the valve against the thrust bearing and keep it in that position without unduly crowding it into its taper seat. The nut 14 may be locked in place in any desired and well-known manner, it not being deemed essential to show same.

Patented Jan. 28, 1919.

The exhaust valve is preferably watercooled by the following construction: The valve may be water-cooled inthe ordinary manner, as shown in Figs. 1 and 4, or it may be made with hollow walls, as shown in Figs. 5, 6, and 7, and provided with water-inlet ports 17, and water-outlet ports 18, which are opposite corresponding ports communicating with the water space 19. Spiral ribs 20 extend from the port 17 to the port 18 between the double walls of the valve and, as shown in Figs. 5, 6, and 7,

such ribs extend into the water in a forward direction at the port 17, and in a rearward direction at the port 18, so that, as the valve revolves, the ribs will engage the water at the port 17 and cause it to travel along the spiral passages between them to the port 18, where the water will be ermitted to escape. To cool the portion of t e valve to the rear of the ports 17, the spiral ribs 21 are provided, which carry the water from the ports 17 to the rear and then permit it to travel forward between reversely twisted spiral ribs 22 to the ports 17 where it again escapes.-

The exhaust valve is also (in the illus-.

trated embodiment shown in Figs. 4, 5, 6, and 7) provided with an asbestos lining 23 which, in the present instance, is held in place by a sheet-metal lining 24. The sheetmetal lining is preferably formed of an end plate 25 and a frus'tum conical sheet 26 preferably holding the plate 25 in place. The sheet 26 is secured to the-valve-body as by screws 27, and its edges 28 around the exhaust openings in the valve are bent down to touch the valve body and cov er and inclose the edges of the asbestos around the openin g While I have shown my exhaust valve as both provided with a water circulation within its walls and provided with the asbestos lining, either one of these protections alone can be made sufiicient. If the valve be made with solid Walls provided with asbestos lining, the asbestos will protect the solid walls from the hot gases within the valve, and the water-cooling which extends around the valve bore will cool the, valvebody sufficiently to take care of whatever heat reaches the body. The asbestos might be so put into the valve-body as notto require any metal lining to hold it in place. The asbestos lining might be omitted and the water-cooling of the valve-body be made eflicient enough to keep the valve cool, notwithstanding its interior were not protected from the valve Walls.

The valve bore is provided with oil grooves 29 which extend longitudinally, but do not extend uninterru'ptedly more than the space of one cylinder, so that no leak can occur from one cylinder to another, or from one cylinder to the exhaust port of another through such grooves. The grooves are preferably only in the valve seat, since, if they were put in the valves they would be exposed directly to the gases of combustion,

as the lubricant therein would become charred.

A tapered intake valve 30 is mounted in a bore 31 formed adjacent to the inlet ports 4,-

It will be observed that my valve mechanism permits of as large intake and exhaust ports as may be desired, the increase in the. size of such ports having little effect upon the clearances. It will also be observed that, as the gases always travel in the same direction in each valve, that is, as only exhaust extendin gases pass through the exhaust valve and unburned gases pass through the inlet valve,

there are no tidal gases such as wouldbe the case if one valve was used for both purposes.

My valve mechanism is exceedingly simple and consists of relatively few parts. Al-

though I obtain the advantage of the hollow I moved from their seats in case adjustment is necessary, a minimum number of parts only having to be disassembled.

I claim I 1. In an explosive engine, the combina tlon of a series of cylinders in line, ports in the tops and on the sides of said cylinders, a conical bore extending along the tops of said cylinders, and a conical bore extending along the sides of said cylinders, and hollow conical valves mounted in said bores, provided with ports through their walls cooperating with said cylinder ports.

- 2. In anexplosive engine, the combination of a series of cylinders in line, ports in the walls of said cylinders, a conical bore extending across said cylinders and with which said ports communicate, and a hollow conical valve mounted in said bore and having ports through its walls cooperating with said cylinder ports, an abutment adapted to determine the position of said valve in said bore, and means for yieldingly holding said valve against said abutment, comprising a spring washer.

3. In an explosive engine, the combination of a series of cylinders in line, ports in the walls of said cylinders, a conical bore across said cylinder and with which said ports communicate, anda hollow conical valve mounted in said bore and having ports through its wall cooperating with said cylinder ports, an abutment adapted to determine the position of said valve in said bore, and means for yieldingly holding said valves against said abutment, comprising a spring washer, said abutment being adjustable. I

- a. In an explosive engine, the combination of a series of cylinders, a conical bore having ports communlcating with said cylhaving their forward ends (relative to the motion of the valve) projecting forward into openings in the outer wall 'of the valve.

7 6. In an explosive engine, the combination of a series of cylinders, a conical bore having ports communicating with said into openings in the outer wall of the valve,

and having their rearward ends projecting rearwardly to other openings in their outer walls.

7. In an explosive engine, the combination of a series of cylinders in line with each other, two conical bores extending lengthwise of said series,'one of said bores being on the top of said cylinders and having exhaust ports communicating with said cylinders and the other of said bores being on the side of said cylinders and having inlet ports communicating with said cylinders, and conical valves mounted in said bores, said valves being hollow and having ports through their walls.

8. In an explosive engine, the combination of a series of cylinders in line, ports in the top and on the sides of said cylinders, a conical bore extendin along the top of said cylinders and a conical bore extending along the sides of said cylinders, hollow conical valves mounted in said bores, provided with ports through their walls cooperating with said cylinder norts, sprockets mounted on said cylinders, and means to drive said sprockets comprising a single chain.

' 9. In an explosive engine, the combination of a hollow valve and a heat protecting lining within said valve.

10. In an explosive engine, the combination of a cylinder, a valve bore, a hollow valve mounted in said bore, ports in said bore and in the Wall of said valve, and a heat protecting lining within said valve.

11. In anexplosive engine, the combina tion of a cyllnder, a valve, bore ports in said cylinder and in the wall of said valve, means.

adapted to provide a water circulation for said valve, and a heat protecting lining in the interior of said valve.

12. In an explosive engine, the combination of a series of cylinders, a conical bore having ports communicating with said cylinders, a hollow conical valve mounted in said bore and having ports in its walls to cooperate with said cylinder ports, the walls of said valve being hollow, means for supplying water between the walls of said valve, and a heat protecting lining within said valve.

13. In an explosive engine, .the combination of a series of cylinders, a conical bore having ports communicating with said cylinder, a hollow conical valve mounted in said bore and having ports in its walls to cooperate with said cylinder ports, the walls of said valve being hollow, means for supplying water between the walls of said valve, a heat protecting lining within said valve, and a metal lining retaining said heat protecting linin in place.

14. In an exp osive engine, the combination of a series of cylinders, a bore having ports communicating with said cylinders, and a hollow rotary valve having a longitudinally extending gas passageway therein, said valve having ports through its walls to cooperate with said cylinder ports, the walls of said valve being hollow for the introduction of a cooling medium.

15. In an explosive engine, the comb1nation of a series of cylinders, a bore having ports communicating with said cylinders, a hollow valve mounted in. said bore and having orts through its walls to cooperate with said cylinder ports, the walls of sald valve being hollow, and means for supplying water between the walls of said valve, said means comprising spiral ribs having their forward ends (relative to the motion of the valve) projecting forward into openings in the outer wall of the valve.

16. In an explosive engine, the combination of a series of cylinders, a bore having ports communicating with said cylinders, a hollow valve mounted in said bore and having ports through its walls to cooperate with said cylinder ports, the walls of said valve being hollow, and means for supplying water between 'the Wallsof said valve, said means comprising spiral 'ribs having their forward ends (relative to the motion of the valve) projecting forward into openings in the outer wall of the valve,

and having their rearward ends projecting rearwardly to other openings in their outer walls.

17. In an explosive engine, the combination of a series of cylinders in line with each other, two bores extendinglengthwise of said series, one of said bores being on the top of said cylinders and havingexhaust ports communicating with said cylinders and the other of said bores being on the side of said cylinders and having inlet ports communicating with 'said cylinders, and valves mounted in said bores, said valves being hollow and having ports through their Walls.

18. In an explosive engine, the combination of a series of cylinders, a bore having ports communicating with said cylinders, a valve in said bore, and means comprising a spring Washer to maintain said valve in position.

19. In an explosive engine, the combination of a series of cylinders, a conical bore having ports communicating with said cylinders, a conical valve in said bore, and means comprising a spring Washer to maintain said valve in position.

20. In an explosive engine, the combination of a series of cylinders, a bore having ports communicating with said cylinders, a valve in said bore provided with a collar, and a spring Washer between the end of said bore and said collar to maintain said valve in position.

21. In an explosive engine, the combination of a series of cylinders, a conical bore having ports communicating with said cylinders,a conical valve in said bore provided with a collar, and a spring Washer between the end of said bore and said collar to maintain said Valve in position.

22. In an explosive engine, the combination of a series of cylinders, a 'bore having ports communicating with said cylinders, a valve in said bore provided with a. collar, ball bearings between said collar and said bore, and a spring washer between the end of said bore and said collar to maintain said valve in position.

23. In an explosive engine, the combination of a series of cylinders, a bore having ports communicating with said cylinders, a valve in said bore provided With a collar, ball bearings between said collar and said bore, and a spring Washer between the end of said bore and said collar to maintain said valve in position, said bore end being adjustable.

In testimony that I-claim the foregoing I have hereunto set my hand.

KENT E. KELLER.

Witnesses:

EDWIN J. PRINDLE, LISETTE BRODERIGK. 

